773-112

This high-quality air pressure switch is a vital safety component designed for residential gas furnaces and HVAC systems. Acting as an air-proving sensor, it monitors the pressure generated by the draft inducer motor to ensure the exhaust system is venting correctly before allowing the heating cycle to begin. Rated at 1.40" WC, this switch helps prevent hazardous operation by detecting venting obstructions or blower motor failures. If your furnace is experiencing ignition issues or displaying a pressure switch lockout code, this precision-engineered replacement part restores reliable performance and ensures safe, efficient heating for your home. Built to the rigorous standards of top-tier heating brands, it provides a dependable solution for maintaining HVAC system integrity.
Type: Air Pressure Switch
Size: Compact
Application: Used in forced-air gas furnaces and HVAC units to verify proper inducer motor operation and flue venting.
Specifications: 1.40" WC (Water Column) pressure rating; air-proving safety function; compatible with Trane and American Standard heating systems.